If you have DI2 or eTap and would want to plug that CAAD12 frame holes, you might be interested in this.
I happened to watch one of the guy's youtube video while researching my issue of how to run brake wires into the CAAD12 frame.
https://www.shapeways.com/product/EH...2-cable-plug-1
I'm thinking of getting them but if anyone knows a better/cheaper option?